diff --git a/appl/ftp/ftpd/ftpd.c b/appl/ftp/ftpd/ftpd.c
index 154a92729..aa81b1923 100644
--- a/appl/ftp/ftpd/ftpd.c
+++ b/appl/ftp/ftpd/ftpd.c
@@ -1248,7 +1248,7 @@ bad:
 static int
 accept_with_timeout(int socket, 
 		    struct sockaddr *address,
-		    size_t *address_len,
+		    socklen_t *address_len,
 		    struct timeval *timeout)
 {
     int ret;